"Sam, Sam! Wake up and smell the coffee!" Mr. Smith walked over to Sam's desk and shook him awake.
"May I help you Mr. Smith?"
The class laughed, "I was just wondering if you could help the class answer the question on the board Sam."
Sam gazed at the question "What is the quadratic formula?" Then glanced at the clock, it was 11:55, only 5 minutes until lunch.
"Well Mr. Smith, I'm glad you asked that question, you see, you never defined the word 'quadratic' in the question. Therefore, you can't solve it. Surely even a great mathematician like yourself would know this." Sam said, making sure to take his time.
"Then maybe you can tell me what I was talking about while you were asleep, I think I mentioned the definition somewhere along the way."
Sam stayed silent, 11:59, if he could stall just one minute more, he would be home-free. "Are you going to answer the question Sam?"
"Why certainly Mr. Smith! You see, the formula is -" The bell rang.
"O.K. Everyone, your homework is on page 475 in your textbooks!" Mr. Smith saw Sam racing towards the door and smiled "Come back Sam! I need to have a word with you."